From the answer:
The easiest way to do this is directly from the Expenses tab of the left Dashboard.... These are the steps to follow: From the left Dashboard > Expenses > Expenses Select Filter and choose Account "Category" in question and hit Apply.

From the answer:
I can walk you through with this, wickramasinghemc .... Here's how you can reverse or undo previously reconciled transactions in QuickBooks Online: Click the Gear icon on th e top menu.

From the answer:
Let me share some information about Cost of Goods Sold, info .... When you sell inventory items on invoices or sales receipts your Cost of Goods Sold (COGS) will automatically affected or matched.